CryptoWire, SEOUL, South Korea, Feb. 7: A South Korean cryptocurrency exchange said it accidentally distributed more than $40 billion worth of bitcoin to customers due to a system error, briefly crediting hundreds of accounts with digital assets far exceeding their intended rewards before the mistake was identified and reversed. Bithumb said the incident occurred on Friday during the processing of a promotional payout. The exchange had planned to issue a small incentive of 2,000 won, equivalent to about $1.37, to eligible users. Instead, the system credited recipients with 2,000 bitcoins each. At market prices at the time, the unintended transfers amounted to tens of millions of dollars…